Longer-lived would be thousands of years for the steel structure until it is manually handable. 50-100 years for remote handling.

> It was shown that wait times are required in the order 50–100 years for the remote handling recycling option and hundreds (Li4SiO4) to thousands (Eurofer) years for hands-on handling.

Source: https://doi.org/10.1016/S0022-3115(02)01273-4

I recall from a talk a couple of years back ( so not sure I got it correctly) that after 50-100 years you can basically walk into the fusion reactor without having to worry about radiation.

https://www.quora.com/Does-nuclear-fusion-produce-waste says "typically less than 30 years for neutron activated fusion chamber materials"